#include<bits/stdc++.h>

using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;

int main() {
	
	std::ios::sync_with_stdio(false);
	std::cin.tie(0);

	int n, t, a;
	std::cin >> n >> t >> a;
	if(t > n / 2 || a > n / 2) {
		std::cout << "Yes";
	}else {
		std::cout << "No\n";
	}

	return 0;
}